Reports results of short-term training procedures upon the acquisition of the concept of conservation in children. (DR)

An investigation of the influence of internal and external cues upon the perception of humor in the violation of a logical expectancy (using conservation of weight) in a total of 108 third and fifth graders. (ED)

Studies the effects of modeling and reversibility cues in teaching 4-year-olds to conserve length. Results are discussed in terms of a social learning viewpoint of cognitive development. (ED)

Nursery school children (N=64) received seven tests of conservation of number which varied in the type and number of perceptual supports for conservation. Most of the tests with these supports facilitated performance in comparison to the standard conservation test. Conservation appeared earlier than usual. There were significant effects of…

An extension of discrimination-learning theory based on the inhibition of stimulus intensity was proposed and supported as a mechanism of cognitive development. Among 48 normal and 37 educable mentally retarded children the predominant category of transistional children conserved at a low level of stimulus intensity but failed to conserve at a…

This study investigated the linguistic components of Piaget's class-inclusion task. First, hierarchical classification is examined from both Piagetian and linguistic theory points of view. Then, two general characteristics of child thinking that relate to the different interpretations of the responses to classification questions are discussed: (1)…